---
id: CVE-2026-84155
title: Session Token Remains Valid After Logout in Multi-Worker Deployments
summary: >-
  CodeChecker's web server fails to fully invalidate a session token on logout
  when the server runs with more than one API worker process (the default). Each
  worker process maintains its own

  in-memory session cache; logout only clears the …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-613
vendor: Ericsson
product: CodeChecker
affected:
  - CodeChecker < 6.29.3
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T10:27:24.656Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-84155'
references:
  - url: >-
      https://github.com/Ericsson/codechecker/security/advisories/GHSA-r42x-9wgw-cqc2
tags:
  - cve.org
ingestedAt: '2026-11-06T10:49:35.379Z'
epss: 0.00139
epssPercentile: 0.03327
---

## Overview

CodeChecker's web server fails to fully invalidate a session token on logout when the server runs with more than one API worker process (the default). Each worker process maintains its own
in-memory session cache; logout only clears the cache of the single worker that handles the request (plus the shared database record). Other workers continue to honor the destroyed token
from their stale in-memory copies until the session's lifetime expires. An attacker who has captured a valid token can therefore keep impersonating the user after the user has logged out.

## Affected

- `CodeChecker < 6.29.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.